"Sequence Variation" is sometimes designated as "polymorphism",
indicating that it is "non-disease causing".
According to the general definition in human genetics,
a "polymorphism" has to reach an allelic frequency of 1%. In addition,
when a sequence variation is found in one single individual,
it is not possible to determine if it is "non-disease causing"

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The Database was last updated at Apr 25, 2011